[TaroBear]

I've been doing some research about upgrading mine, had it for about a month. The plastic on TMs are in fact really awesome, but the MEU is really weighted towards the grip and magazines. The manual states that it's not too much lighter than the real thing, but I think I'd like it to be a bit heavier. Most of the parts of the gun you'd normally touch with your finger are already metal, however. I'd say you should probably try it out for a bit first before deciding to put metal on it, since I could easily see using it just fine without any metal at all. Anything worth putting on the gun would probably cost you almost as much as a brand new factory stock MEU.